Dredging device.



G. E.` ALLEMAN.

DREDGING DEVICE.

APPLICATION min AUG.25.1917.

Patented Nov, 27, 19m

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DREDGIN G DEVICE.

Specification of Letters Patent.

Patented Nov.. 27, 1917.

Application led August 25, 1917. Serial No. 188,097.

To all whom t may concern.'

Be it known that I, GRANT E. ALLEMAN, a citizen of the United States, residing at Shoemakersvlle, in the county of Berks and 5 State of Pennsylvania, have invented certain newand useful Improvements in Dredging Devices, of which the following is a specification. L',

This invention relates to improvements in dredging ldevices and it is intended more partir/windy for use in dredging'streams for the reglayiniing of coal from culm.

Thfiinnention comprises a pair of floats, .one ofiwiliich is stationary, preferably anchored and the other of which is attached to the stationary float through the medium of a pivotal connection, whereby the movable float, on which thesuction device or dredging machinery is located, may be moved about within a certain radius, whereby a large area of river bottom may be worked without moving from the anchored point.

Provision is made in the present invention for conveying the coal thus reclaimed from the movable ioat to the stationary float,

f' from which latter it may be raised by any suitable device and delivered to the wharf, on cars orto anyrdesired point.

' Provision is also made for carrying o the refuse that is deposited while the culm is drifting from the movable lloat to theV stationary float, thus removing this refuse to a point whereit will not again be drawn up by the pump.' Y

rlhe invention is more fullydescribed in `the following specification and clearly illus* trated in the accompanying drawing, in which Figure 1 is a dredging device. Fig. 2 is a side elevational view thereof.

Fig. 3 is a detail view, slightly enlarged, of one of the pivotal connections between the two floats. Thenumeral l'designates the stationary float, .which may be secured to the. wharf or other point in any desired manner. This yoat is provided with van elevating device, of any desired form, preferably that of an endless belt provided with a series of vanes, Jindicated b y the numeral 3. rThis elevating plan view of my improved l' device is operated by means of a suitable motor indicated by the numeral 4.

The elevating-'belt travels in a trough 5, .one end of which projects beyond the end of the float whereby the coal when drawn to the top thereof may be deposited in cars or other receptacles. The other end of Lhe trough projects beyond the opposite end of the float and is provided with ali Iupwardly extending tubular member 6, formi-ng an entrance into the trough.

The numeral 2 designates the movable float, and on this float I provide a dredging or suction device of any well known form, as for instance a power driven pump, 7 provided with an elongated outlettube 8.

The numeral 9 designates a coal washing chute of any desired form, arranged at an incline to the surface of the liioat, whereby the coal or culm deposited therein will drift `toward the lower end while the hner particles together with the waste water will pass through openings in the bottom thereof. The numeral 10 designates a refuse trough, located immediately beneath the washing chute and adapted to receive said refuse and wate'r.

lThe ends of both the washing chute and 'the refuse trough project beyond the end of The refuse trough l0 is alsol providedl with a tubular member 11, adapted to enter a like member 12 on a conveying chute 13 'and this latter chute 13 is preferably mounted on a raft or other floating member, and,

' by reason of the pivotal connection with the refuse trough, it may be turned in the desired direction so that the refuse is deposited in a place away from the dredging ground, or onto a raft or other conveyance if desired.

Both the washing chute 9 and the refuse trough 1() are mounted in supports 20, preferably by means of a pivot 21, and the receiving ends of these members are held between uprights 22 which are in turn provided with elongated slots 24, so that the opposite ends of the members 9 and 10, may be raised until the tubular connections are madeat 11, after which they are secured in any suitable manner. e The mouth of the pump tube 8 is directed iro into the receivingr end of the Washing chute Y) and the culm w1ll pass down this chute, dcpositing the refuse and water into the refuse trough lO and deliver the reclaimed coal through the pivotal tubular connection 1l into the end of the chute or trough 5 where 'it is engaged by the vanes on the elevator belt and carrir l to the topof the trough and deposited on the wharf or on cars as desired.

It is evident that with this invention, l

am enabled to work over a relatively large space of river bottom without changing the delivery point of the reclaimed coal.

The invention is simple/in construction, low in cost, and particularly well adapted to the work described.

What I claim is 1.' In a device of the character described, a stationary float, an elevating device thereon, a trough in which the elevating:v device moves, said trough having an -upwardly projectiiw hollow member atone end; a movable ibat, a suction'pump located thereon, a washing chute pivot-ally mounted on the float and into which the pump deposits the dredging, means for raising and lowering the delivery end of Said washing chute., saidchute having a downwardlyprojecting hollow member adapted to enter the hollow member on the trou-gh of the stationarv float, a refuge trough located immediately beneath said chute, said refuse trough being pivotally mounted on the float and having Y means for raising and lowering the delivery end of the trough, a downwardly projecting hollow member on the delivery end of said refuse trough, a conveying chute, an upwardly projecting hollow member on the re ceiving end olf said conveying chute adapted to receive 'the llke member on the refuse trough, and a float for said conveying chute.

2. In a device of the character described, a Stationary float, an elevating device there on, a trough in which the elevating device moves, said trough having an upwardly pro jecting hollow member at one end; a movable float, a dredging pump thereon, a chute into which the pump deposits the dredging,

In testimony whereof l ali'ix my signature.

GRANT E. frLllEMl-XN. 

